spec: fix spec for envs that don't define database_server
spec: fix spec for envs that don't define database_server

The code was checking shard.respond_to?(:database_server) but not the
spec

Change-Id: If4b1da7b6df3f5c9447ed0bfd5243985a3fbaba1
Reviewed-on: https://gerrit.instructure.com/23666
Reviewed-by: Cody Cutrer <c4fe2b1d90ef8f2548c8aeabfa633434316f0305@instructure.com>
Reviewed-by: Rob Orton <7e09c9d3e96378bf549fc283fd6e1e5b7014cc33@instructure.com>
Product-Review: Bryan Madsen <0a3ba1af216659500dd8f41e29f3979f42452870@instructure.com>
QA-Review: Bryan Madsen <0a3ba1af216659500dd8f41e29f3979f42452870@instructure.com>
Tested-by: Jenkins <d95b56ce41a2e1ac4cecdd398defd7414407cc08@instructure.com>

merichar/canvas-lms,leftplusrightllc/canvas-lms,redconfetti/canvas-lms,sdeleon28/canvas-lms,leftplusrightllc/canvas-lms,snehakachroo1/LSI_replica,skmezanul/canvas-lms,dgynn/canvas-lms,venturehive/canvas-lms,juoni/canvas-lms,matematikk-mooc/canvas-lms,whalejasmine/canvas-lms,jay3126/canvas-lms,efrj/canvas-lms,loganrun/pincan,roxolan/canvas-lms,venturehive/canvas-lms,shidao-fm/canvas-lms,arrivu/qibla-ecampus,greyhwndz/canvas-lms,sfu/canvas-lms,whalejasmine/canvas-lms,utkarshx/canvas-lms,narigone/canvas,landonwilkins/canvas-lms,greyhwndz/canvas-lms,eCNAP/CANVAS,instructure/canvas-lms,wye0220/shindig-canvas,va7map/canvas-lms,sfu/canvas-lms,dgynn/canvas-lms,ShreniiNepal/shrenii_lmp,kyroskoh/canvas-lms,SwinburneOnline/canvas-lms,kyroskoh/canvas-lms,AndranikMarkosyan/lms,sfu/canvas-lms,shidao-fm/canvas-lms,efrj/canvas-lms,instructure/canvas-lms,Rvor/canvas-lms,grahamb/canvas-lms,usmschuck/canvas,usmschuck/canvas,djbender/canvas-lms,sdeleon28/canvas-lms,djbender/canvas-lms,sfu/canvas-lms,dgynn/canvas-lms,roxolan/canvas-lms,roxolan/canvas-lms,shidao-fm/canvas-lms,utkarshx/canvas-lms,wrdsb/canvas-lms,jay3126/canvas-lms,leftplusrightllc/canvas-lms,Rvor/canvas-lms,SwinburneOnline/canvas-lms,landonwilkins/canvas-lms,greyhwndz/canvas-lms,antoniuslin/canvas-lms,sdeleon28/canvas-lms,redconfetti/canvas-lms,arrivu/arrivu-lms,grahamb/canvas-lms,tgroshon/canvas-lms,narigone/canvas,arrivu/arrivu-lms,loganrun/pincan,Jyaasa/canvas-lms,arrivu/qibla-ecampus,jay3126/canvas-lms,roxolan/canvas-lms,juoni/canvas-lms,jay3126/canvas-lms,HotChalk/canvas-lms,samuels410/greatlakes-lms,wrdsb/canvas-lms,antoniuslin/canvas-lms,venturehive/canvas-lms,instructure/canvas-lms,wye0220/shindig-canvas,kyroskoh/canvas-lms,gbleydon/canvas-lms,HotChalk/canvas-lms,ShreniiNepal/shrenii_lmp,sfu/canvas-lms,merichar/canvas-lms,tgroshon/canvas-lms,landonwilkins/canvas-lms,Unow/canvas-lms,va7map/canvas-lms,arrivu/arrivu-lms,fronteerio/canvas-lms,tgroshon/canvas-lms,HotChalk/canvas-lms,wrdsb/canvas-lms,antoniuslin/canvas-lms,whalejasmine/canvas-lms,grahamb/canvas-lms,ShreniiNepal/shrenii_lmp,leftplusrightllc/canvas-lms,eCNAP/CANVAS,samuels410/greatlakes-lms,Jyaasa/canvas-lms,arrivu/jigsaw-lms,samuels410/greatlakes-lms,eCNAP/CANVAS,sfu/canvas-lms,fronteerio/canvas-lms,instructure/canvas-lms,AndranikMarkosyan/lms,instructure/canvas-lms,arrivu/qibla-ecampus,SwinburneOnline/canvas-lms,usmschuck/canvas,fronteerio/canvas-lms,tgroshon/canvas-lms,grahamb/canvas-lms,grahamb/canvas-lms,venturehive/canvas-lms,redconfetti/canvas-lms,Rvor/canvas-lms,instructure/canvas-lms,juoni/canvas-lms,snehakachroo1/LSI_replica,narigone/canvas,HotChalk/canvas-lms,va7map/canvas-lms,skmezanul/canvas-lms,gbleydon/canvas-lms,matematikk-mooc/canvas-lms,kyroskoh/canvas-lms,snehakachroo1/LSI_replica,narigone/canvas,greyhwndz/canvas-lms,landonwilkins/canvas-lms,Unow/canvas-lms,gbleydon/canvas-lms,djbender/canvas-lms,wimemx/Canvas,sfu/canvas-lms,utkarshx/canvas-lms,Rvor/canvas-lms,whalejasmine/canvas-lms,AndranikMarkosyan/lms,arrivu/hoodemo,wimemx/Canvas,wrdsb/canvas-lms,merichar/canvas-lms,loganrun/pincan,arrivu/hoodemo,Jyaasa/canvas-lms,Jyaasa/canvas-lms,fronteerio/canvas-lms,ShreniiNepal/shrenii_lmp,antoniuslin/canvas-lms,dgynn/canvas-lms,SwinburneOnline/canvas-lms,djbender/canvas-lms,eCNAP/CANVAS,skmezanul/canvas-lms,samuels410/greatlakes-lms,arrivu/jigsaw-lms,skmezanul/canvas-lms,snehakachroo1/LSI_replica,arrivu/jigsaw-lms,matematikk-mooc/canvas-lms,utkarshx/canvas-lms,va7map/canvas-lms,arrivu/hoodemo,efrj/canvas-lms,efrj/canvas-lms,wye0220/shindig-canvas,shidao-fm/canvas-lms,instructure/canvas-lms,wimemx/Canvas,matematikk-mooc/canvas-lms,usmschuck/canvas,redconfetti/canvas-lms,Unow/canvas-lms,juoni/canvas-lms,sdeleon28/canvas-lms,AndranikMarkosyan/lms